Chapter 39: Lord's Day 39
Section 108. Q. 108: What is God's will for us in the seventh commandment? A. God condemns all unchastity. We should therefore thoroughly detest it and, married or single, live decent and chaste lives. Those who are married should be faithful to their spouses; those who are single should be chaste, avoiding all unchaste actions, looks, words, thoughts, or entertainment, as much as possible. They should use all means available to them to maintain chastity, including prayer.